BD8174MUV.pdf 데이터시트 (총 30 페이지) - 파일 다운로드 BD8174MUV 데이타시트 다운로드

No Preview Available !

Datasheet
Power Supply IC Series for TFT-LCD Panels
Output voltage fixed-type
Multi-channel System Power Supply IC
BD8174MUV
General Description
The BD8174MUV is a system power supply IC that
generates 6 power supply channels required by TFT-LCD
panels on a single chip.
Output voltage and sequence is fixed so that it is possible
to control output with few external components.
Key Specifications
Power Supply Voltage 1 Range:
Oscillating Frequency:
Operating Temperature Range:
10V to 14V
700kHz(Typ)
-40°C to +105°C
Package
W(Typ) x D(Typ) x H(Max)
Features
Step-up DC/DC Converter with Built-in 3A FET
Synchronous Step-down DC/DC Converter with
Built-in 2A FET
High Voltage LDO (50mA)
Low Voltage LDO (400mA)
Positive/ Negative Charge Pumps (Integrated-diode)
10bit DAC 4CH
VCOM Amplifier
Gate Shading Function
All-output Shut Down Function
Power Good Function
Protection Circuits:
Under-Voltage Lockout Protection Circuit
Thermal Shutdown Circuit
Over Current Protection Circuit
Over Voltage Protection Circuit
Timer Latch Type Short-Circuit Protection Circuit
Constant Startup Sequence
VQFN048V7070
7.00mm x 7.00mm x 1.00mm
Applications
LCD TV power supplies
Product structureSilicon monolithic integrated circuit
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211114001
This product has no designed protection against radioactive rays
1/38
TSZ02201-0313AAZ00670-1-2
17.Feb.2016 Rev.001

No Preview Available !

BD8174MUV
Typical Application Circuit (1)
1. VCC12V input application
VDD
(3.3V)
LVLDO
(1.2/1.5/1.8V)
LVCTL
PG VDD
BOOT
LVCTL
PG
PVCC2
FB1
COMP1
PGND1
PGND1
SW1
SW1
LSO1
LSO1
BD8174MUV
OUT0
SCP
DACGND
FBLD1
HVLDO
INP
INN
VCOM
THR
CTL
DRN
COM
OUT0
HVLDO
VCOM
THR
CTL
COM
VIN
(12V)
VLS
VGH
(35.2V)
2. Startup sequence
VIN input
VDD1
(Step-down)
LVLDO
VGL
(-6V)
VLS
VGL
VGH
GS
(Step-up)
(Negative charge pump) (Positive charge pump)
HVLDO (15.2V)
PG
DAC Control
DAC OUT
3. Power up sequence
VIN(12V)
VCOM
VDD(3.3V)
LVLDO(1.2/1.5/1.8V)
DAC Control
VLS(15.6V)
HVLDO(15.2V)
DAC OUT
VCOM
VGH(35.2V)
80%
2m(typ)
PG
GS logic
VGL(-6V)
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
2/38
TSZ02201-0313AAZ00670-1-2
17.Feb.2016 Rev.001

No Preview Available !

BD8174MUV
Block Diagram
VIN(12V)
C12
LSO1
47
48
L11
D11
C11
SW1
45
46
PGND
43
44
C13
R12
R11
FB1 41
COMP1
42
C14 R14
PVCC1
12
VCC
OCP
STEP UP
DC/DC
Soft
Start
REF
ERR
GCTL
34
C15
Load SW
Control
SEQUENCE
CONTROL
OCP
STEP DOWN
DC/DC
REG5
Soft
Start VDD
REF
ERR
FB2
PVCC2
40
C22
SW2
35
PGND2
36
L21
C21
37
BOOT
C25
VDD
3.3V
33
VDD_S
VLS
15.6V
VGH
35.2V
HVCC
HVCC 4
OVP
UVLO
C32
OVP
OCP
C51
D51
VGH
12
CPD2 10
CPD1 11
C53 C52
CPP1 7
CPP2 8
HVCC
Positive
Charge Pump
C54
VDD
R91
3
CPPCTL
39
PG
FBCP1
UVLO
TSD
VREF
OSC
HVCC
HV LDO
VREF
VDD
REG
HVLDO
20
C33
21
FBLD1
REG5
HVLDO
15.2V
R31 C31
R32
REG5
32
C92
REG5
LV LDO
FBLD2
LVLDO
31
LVCTL
38
LVLDO
1.8V/1.5V/1.2V
C41
C81 R81
From Calibrator
VCOM
C71
COM
13
DRN
14
CTL
15
THR
16
Gate
Shading
INP
19
INN
18
HVCC
R73
17
VCOM
VDD
FB1
FB2
FBLD1
FBLD2
FBCP1
FBCP2
Timer
Latch
HVLDO
Power
On Reset
SDA
SCL
29
30
I2C
I/F
DAC Control
DACVREF
×4 ×4 ×4 ×4
HVCC
AMP1
AMP3
AMP0
AMP2
24 25 26 27
OUT0
OUT1
OUT3
OUT2
C901
C903
C900
C902
1.5V
REF
FBCP2
Negative
Charge Pump
VCC
DACVREF
VGL_S
5
CPN
6
C62
D61
VGL
-6V
SCP
23
C93
C61
28
GND
9
CPGND
22
DACGND
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
3/38
TSZ02201-0313AAZ00670-1-2
17.Feb.2016 Rev.001

No Preview Available !

BD8174MUV
Application Parts List (When VLS=15.6V, HVLDO=15.2V is configured)
PARTS LOCATION
R11
R12
R14
R31
R32
R73
R81
R91
C11
C12
C13
C14
C15
C21
C22
C25
C31
C32
C33
C41
C51
C52
C53
C54
C61
C62
C71
C81
C92
C93
C900
C901
C902
C903
L11
L21
D11
D51
D61
Value
130kΩ+16kΩ
10kΩ
3kΩ
130kΩ+12kΩ
10kΩ
430Ω
4.3kΩ
100kΩ
10µF
10µF
100pF
2200pF
-
10µF
10µF
0.1µF
4.7µF
10µF
22pF
4.7µF
1.0µF
0.1µF
0.1µF
-
1.0µF
22000pF
1.0µF
1000pF
1.0µF
0.1µF
10µF
10µF
10µF
10µF
10µH
10µH
-
-
-
Company
ROHM
ROHM
ROHM
ROHM
ROHM
ROHM
ROHM
ROHM
Murata
Murata
Murata
Murata
-
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
-
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
Murata
TAIYOYUDEN
TAIYO YUDEN
ROHM
ROHM
ROHM
PRODUCT NUMBER
MCR01MZPD
MCR01MZPD
MCR01MZPD
MCR01MZPD
MCR01MZPD
MCR18EZHF
MCR03EZPD
MCR01MZPD
GRM31CB31E106KA75
GRM31CB31E106KA75
GRM1882C1H101JA01
GRM188B11H222KA01
-
GRM31CB31E106KA75
GRM31CB31E106KA75
GRM188R11H104KA93
GRM319B31E475KA75
GRM31CB31E106KA75
GRM1882C1H220JA01
GRM21BB31C475KA75
GRM21BB31H105KA12
GRM188R11H104KA93
GRM188R11H104KA93
-
GRM188R11H104KA93
GRM188B11H223KA01
GRM21BB31H105KA12
GRM188B11H102KA01
GRM21BB31H105KA12
GRM188R11H104KA93
GRM31CB31E106KA75
GRM31CB31E106KA75
GRM31CB31E106KA75
GRM31CB31E106KA75
NR6045T100M
NR6045T100M
RSX501L-20
RB162M-40
RB550EATR
Pin Configuration
TOP VIEW
36 35 34 33 32 31 30 29 28 27 26 25
37 24
38 23
39 22
40 21
41 20
42 19
43 18
44 17
45 16
46 15
47 14
48 13
1 2 3 4 5 6 7 8 9 10 11 12
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
4/38
TSZ02201-0313AAZ00670-1-2
17.Feb.2016 Rev.001

No Preview Available !

BD8174MUV
Pin Description
PIN
Pin name
NO.
1 PVCC1
2 PVCC1
3 CPPCTL
4 HVCC
5 VGL_S
6 CPN
7 CPP1
8 CPP2
9 CPGND
10 CPD2
11 CPD1
12 VGH
13 COM
14 DRN
15 CTL
16 THR
17 VCOM
18 INN
19 INP
20 HVLDO
21 FBLD1
22 DACGND
23 SCP
24 OUT0
25 OUT1
26 OUT2
27 OUT3
28 GND
29 SDA
30 SCL
31 LVLDO
32 REG5
33 VDD_S
34 GCTL
35 SW2
36 PGND2
37 BOOT
38 LVCTL
39 PG
40 PVCC2
Function
Boost DC/DC load switch input. See Boost DC/DC (1) for more information.
Boost DC/DC load switch input. See Boost DC/DC (1) for more information.
Positive charge pump control input. See charge pump (4) for more information.
Power supply pin for charge pump, buffer amplifier and HV_LDO.
Negative charge pump output VGL feedback input.
Negative charge pump regulator driver output. Drive pin for negative charge pump.
See charge pump (4) for more information.
Positive charge pump regulator driver output1. Drive pin for positive charge pump.
See charge pump (4) for more information.
Positive charge pump regulator driver output2. Drive pin for positive charge pump.
See charge pump (4) for more information.
Power grounding pin at charge pump.
Positive charge pump internal switching diode output2.
Positive charge pump internal switching diode output1.
Positive charge pump output VGH. Connect output capacitor from this pin to GND.
Gate shading output pin.
Termination of the low side switch of the gate voltage shading block.
Gate shading control input pin.
Gate shading Low level setting pin.
VCOM Output
VCOM input-.
VCOM input+.
HV_LDO output pin. Insert output capacitance for GND.
HV_LDO feedback input pin.
GND pin for DAC.
Short protection delay pin. To set short protection delay time, connect capacitor for GND pair.
For details, refer to information in common block (6).
Gamma output pin.
Gamma output pin.
Gamma output pin.
Gamma output pin.
Grounding pin.
Serial data input pin.
Serial clock input pin.
LV_LDO output pin. Output outputs 1.8V/ 1.5V/ 1.2V (typ). Insert output capacitance for GND.
Internal power supply 5.0V output pin. Connect 0.1µF from this pin to ground.
Buck DC/DC output VDD feedback input. No external registance necessary for feedback register.
Boost DC/DC load switch PGATE control input. For details, refer to information in Boost DC/DC (1).
Buck DC/DC switching output. Due to reduce EMI, make a wiring thick and short.
Buck DC/DC switching node power grounding pin. Due to reduce EMI, make a wiring thick and short.
Buck DC/DC bootstrap pin. This pin generates the gate drive voltage for the Buck converter.
Connect 0.1µF from this pin to the switch pin of step down converter, SW2.
LVLDO output voltage setting pin.
Power good output. After positive charge pump output VGH startup, It will be ON. For Buck DC/DC output,
Pull-UP and use it. If you dont use it, It will open.
Buck DC/DC high side MOSFET power supply input. Connect a capacitor as close to PVCC pin as possiple.
www.rohm.com
© 2016 ROHM Co., Ltd. All rights reserved.
TSZ2211115001
5/38
TSZ02201-0313AAZ00670-1-2
17.Feb.2016 Rev.001